/proc/self/task/4
This explorer reads the filesystem of the server it runs on, so /workspace/user isn't present here. Browsing and the terminal still work against this server's own disk from /.
4 (node) S 2 2 0 0 -1 4194560 40591 0 615 0 525 90 0 0 20 0 11 0 955 1792892928 29272 18446744073709551615 94498864627712 94498908538805 140726427882592 0 0 0 0 16781312 17922 1 0 0 17 0 0 0 3 0 0 94498963992256 94498964861040 94499651551232 140726427891136 140726427891374 140726427891374 140726427893733 0